626 Master cylinder upgrade. The stock protégé MC is 15/16" diameter. With the BBK, an upgrade is in order. The master cylinder found on the Mazda 626 and 929 (V6 models with ABS) is a 1" unit. 1/16" doesn't sound like much, but remember surface area increases exponentially in a circle. Given the math, the stock MC has a surface area of 0.69 square inches. The 1" unit has a surface area of 0.79 square inches. A 15% increase. The master cylinder is a direct bolt in, however new lines will have to be made as they now exit on the drivers side of the MC. This has the added benefit of a more stealth look as well. Stock shown on right, 626 on left. One from an automatic will also work, but will not have the nipple on the reservoir for the clutch master cylinder, so you will need to swap the Protégé one over.
Bending and flaring the lines was a challenge. They must make an immediate turn to avoid the space where the battery resides.
With the intake side catch can mounted, I could plumb up new lines. A 120* off the can into a 90* at the valve cover worked great and gave lots of clearance for the intake pipe. Clamped it to the fuel line using a -8 and -6 separator.